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Use caution when driving, operating machinery, or performing other hazardous activities. Chlorpheniramine, hydrocodone, and phenylephrine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities. Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while taking chlorpheniramine, hydrocodone, and phenylephrine.

Chlorpheniramine, hydrocodone, and phenylephrine may increase the effects of other drugs that cause drowsiness, including antidepressants, alcohol, antihistamines, sedatives (used to treat insomnia), pain relievers, anxiety medicines, seizure medicines, and muscle relaxants. Tell your doctor about all medicines that you are taking, and do not take any other medicine without first talking to your doctor.
Hydrocodone is habit forming. It is possible become physically and/or psychologically dependent on the medication. Do not take more than the prescribed amount of medication or take it for longer than is directed by your doctor. Withdrawal effects may occur if chlorpheniramine, hydrocodone, and phenylephrine is stopped suddenly after several weeks of continuous use. Your doctor may recommend a gradual reduction in dose.

-Healthline

Take amlodipine exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass of water. Do not stop taking amlodipine without first talking to your doctor, even if you begin to feel better. If you stop taking the medication, your condition could become worse. Store amlodipine at room temperature away from moisture and heat.